1985

7.1

1957

8.1

1999

7.3

2000

8.0

1994

6.4

1962

7.9

2015

5.7

2003

7.2

2004

7.5

1987

6.5

1981

7.3

1962

8.0

2014

8.5

1954

8.4

2006

6.9

1997

5.2

2008

6.2

1987

7.3

2010

6.5

2005

7.0